Mortar-mixing machine



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R. T. VAN VALKENBURG.

MORTAR MIXING MAGHINE. No. 257,627. Patented May 9,1882.

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, 3.. T, VAN VALKENBURG. MORTAR MIXING MACHINE. No. 257,627; PatentedMay 9,1882.

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"UNITED STATES PATENT OFFI E..- V

RANDALL '1. VAN VALKENBURG, OF MANCHESTER, MlOHIGAN.

MO RTA R-MIXING MACHINE.-

. SPECIFICATION forming part of Letters Patent No. 257,627, dated May 9, 1862'.

Application filed March 15, 1882. (No model.)

To all whom it may concern:

Be it known that I, RANDALL T. VAN VALK- ENBURG, of Manchester, in the county of \Vashteuaw and State of Michigan, have invented new and useful Improvements in Mortar-Mixing Machines; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

The nature of this invention relates to certain new and usefulimprovements in the construction of that class of machines which are designed for mixing plasterer's mortar; and the invention is especially designed to beau improvement upon the device patented to Charles Pierce, August 19, 1873, in Letters PatentNo. 141,947, and which now belongs to me The invention consists in the peculiar con struction of parts, their various combinations and' operation, as more fully hereinafter describe.

,Figure '1 is a perspective view of my improved machine, taken on one side. Fig. 2 is aperspective View taken fronrthe rear of the machine. Fig. 3 is a similarview taken from the opposite end. Fig. 4 is a central longitu- (linl al section through the liine-slaking cylinder, its hollow shaft, and connections. Fig.

is a sectional view, showingthe construction of the regulating cut-off between theelevators 1 and the mixer proper.

, In theaccompanying drawings, A represents the'frame of my machine, which supports the operating parts. This frame may be varied, from the constructionshown, as may be A box, B, divided into two parts by E, secured to a hollow perforated shaft, F,

which rotates in hearings or boxes a, secured to the frame. This cylinder is provided with a door or slide, I), through which the lime to be slaked is shoveled in and withdrawn.

G is a tank or source oi water-supply, provided with a rigid pipe, 0, in whiclris a cook or regulating-valve. (l. The unconnected end of this pipe is provided with a conicallyshaped mouth, 6, to receive the end of theshaft F;

which is properly shaped to titinto said mouth, and some suitable devicelike the spring H, impinging against the opposite end of, said shaftis employed to prevent iateralplay thereof and to compel a tightconnection with the water-supply without interfering with the rotation of the shaft, upon which is secured a pulley, h by means of which the shaft may be rotated from any suitable power. The pulley his so secured to the shaft as to rotate with it, while at the same time it is susceptible of a reciprocating movement on the shaft, being actuated thereto by the lever i and forked lever k, in the usual manner of operatin g.

a clutch. One face of the pulley is So1constructcd as to form one halfof the clutch, while the other half thereof is secured to the-adj acent head ofthe cylinder E, as shown in Fig.1. Below this cylinder is a flat screen, 0, through which the contents of the cylinder, when" discharged therefrom, pass into the box. Each of the chambers of this boxB is provided with a trap or door, I, through which the contents of the box are discharged into an annex, I, from which they are carried: by thctw'o-part elevator, one being for-each division or chamber of'the annex, vh ch is divided into two compartments coincident to the chami l s in the box B by the partition m. The

sand being screened falls into one 'ofthesc chambers, whilethe stones and lunfps found in the'sand are discharged from the screen through the spout a, which is situated at the end of the screen opposite the chute. The lime is put into the cylinder E through the door I), which is then closed, and the water let into the hollow shalt escapes through theperv door I) onto the screen 0, which arrests any stones and allows the fine slaked lime to pass into its proper chamber. The elevators carry up the contents of the box, one elevator carrying the lime and the other the sand, and dumps the sand into the hopper J and the means of the pins or buttons 1;, which project through the head or end of each of theseeyl inders in order to enlarge or diminish the area of the V-shaped chamber L in the cylinders The wall of each of these cylinders is cut out, the opening being of the same area as the discharge ends of the hoppers J J. ders are sojournaled below the hoppers as to act as a cut-oil to prevent discharge from said hoppers, except when the opening in the cylinders, in their rotation, is presented to the discharge end of the hopper, when the chambers in said cylinders are filled bysuch discharge. In the further rotation of the cylinders they cut ofl" further discharge until the next revolution, and discharge their contents into the mixing-chamber M, through which passes the main driving-shaft of the device, said shaft beingprovided with mixing-blades N,.arrangcd spirally upon the shaft, .or in such a manner that as they revolve they not only mix the lime and sand together, but carry the mixture toward the rear end of the mixingchamber, where it passes into the top of a spout, P, within which revolves a solid wheel, R. The lower end of this spout is enlarged to form a semicircular concavity, within which the wheel R rotates almost in contact with the concave of the spout, so that the mixed mortar, as it passes down the spout, will be ground to a uniform fineness before it passes down to the discharge of the concave. This spout, with" its wheel, is fully described in the patenthereinbefore referred to. The opening in the mixing-chamber is provided with a slide ordoor, S, through which the mixed mortar passes to the spout.

A belt, T, communicates motion to the wheel Rfrom the main shaft. Upon the opposite end of this main shaft are secured pulleys U, one being larger than the other two, and communicates motion, by means of the belt or cord V, to the cylinder E and rotating screen 0, while the smaller of the pulleys communicates motion to the small cylinders K by means of These cylinthe belt or cord W, and the third pulley U, by means of a belt or cord, X, (shown in Fig. 1,) communicates motion to the pulley Y, which carries the con veyers Z, and are journaled upon the shaft running in the top of the standards A. By this system of belting all the rotating parts are driven from the main shaft and are compacted 'into a very small compass.

What I claim as my invention is v 1. In a device for the purpose described,the combination, within the frame A, of the rotating screen 0, the cylinder E,and the screen 0, with the chambered box 13, substantially as specified.

2. In a' mortar-mixing device, and in combination, the rotating screen 0, cylinder E, subdivided box B, provided with openings 7, and the subdivided annex I, adapted to deliver the contents to elevators, substantially as and for the purposes described.

3. In a mortar-mixing machine provided iwithdevices for screening the sand, slaking .the lime, and elevating the same to the hoppers J and J, the cyliudersK, constructed and operating substantially as and for the purposes set forth.

4. In a mortar-,mixin g machine, the cylinder 'E,pro-vide(.l with a hollow and perforated shaft, in combination with the rigidly-secured watersupply'pipe 0, such hollow shaft rotating within thehead of said pipe and secured in its rotation soas to form a water-ti ht joint by pressure upon the opposite end 0? such shaft, substantial] y as and for the purposes set forth.

5. In afmortar-mixing machine,substantially as described, and in combination, the rotating screen 0, cylinder E, box F, annex I, and elevators Z, the latter being adapted to take the contents of the annex I and deliver them into the hoppers J andJ,substantially as setforth.

0. The combination, in a mortar-mixing machine inclosed within the same supportingt'rame and driven from a single main shaft, of the sand-screen, lime-slaking cylinder, receiving-box,elevating devices,hop-pers, graduated eut-ofls,'and mixing-chamber, the parts constructcd,arranged,and operatingsubstantially as and for the purposes described.

RANDALL 'l. VAN VALKENBURG. Witnesses:

H. S. SPRAGUE, E. SCULLY. 

